Imparting high-temperature degradation resistance to components for internal combustion engine systems
AssigneeDeloro Stellite Holdings Corporation
InventorsAbdelhakim Belhadjhamida, Joseph Overton, James Wu
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Abstract
A method of imparting high-temperature, degradation resistance to a component associated with an internal combustion engine involving applying a metal slurry comprising a Co-based metallic composition, a binder, and a solvent to a surface of the component, and sintering the Co-based metallic composition to form a substantially continuous Co-based alloy coating on the surface of the body. An internal combustion engine component comprising a metallic substrate and a Co-based metallic coating thereon which has a thickness between about 100 and about 1000 microns.
Claims21
A method of imparting high-temperature, degradation resistance to a component associated with an internal combustion engine comprising:
- applying a metal slurry comprising a Co-based metallic composition, a binder, and a solvent to a surface of the component;
- and
- sintering the Co-based metallic composition to form a substantially continuous Co-based alloy coating on the surface of the component.
A method of imparting high-temperature, degradation resistance to a component associated with an internal combustion engine comprising:
- applying a metal slurry which comprises between about 30 and about 60 wt % of Co-based metallic composition, between about 0.5 and about 5 wt % binder, and between about 40 to about 70 wt % solvent to a surface of the component;
- and
- heating to remove the solvent and binder and to sinter the Co-based metallic composition to form a substantially continuous Co-based alloy coating on the surface of the component, wherein the Co-based alloy coating has a microstructure characterized by a generally non-dendritic, irregularly spherical, nodular intermetallic phase.
The method of claim 16 wherein the Co-based alloy comprises about B-0.15%, Cr-8.5%, Mo-28%, Si-2.6%, and balance Co.
An internal combustion engine component comprising a metallic substrate and a Co-based metallic coating thereon which is a Co-based alloy having a microstructure characterized by a generally non-dendritic, irregularly spherical, nodular intermetallic phase, which coating has a thickness between about 100 and about 1000 microns.
Dependencies are inferred from the claim text.